Home / 220,079.75-303,711.31-129,439.53

Finding the Fourth Proportional to 220,079.75, 303,711.31 and 129,439.53

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Solution

The fourth proportional to 220,079.75, 303,711.31 and 129,439.53 is: 178,627.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,079.75 : 303,711.31 = 129,439.53 : x
  2. Step 2: Convert to fraction form
    220,079.75/303,711.31 = 129,439.53/x
  3. Step 3: Cross multiply
    220,079.75x = 303,711.31 × 129,439.53
  4. Step 4: Simplify right side
    220,079.75x = 39,312,249,383.88
  5. Step 5: Solve for x
    x = 39,312,249,383.88/220,079.75
  6. Step 6: Final answer
    x = 178,627.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.